Parkes observations for project P1050 semester 2021OCTS_34

This is a request for observing time for the timing campaign of new pulsar discoveries from the reprocessing of the low-latitude Galactic plane section of the HTRU survey (P630). We have now completed 90 % of the survey with GPU based coherent acceleration search, template bank and fast folding algorithm pipelines, and now have discovered 92 previously unknown pulsars and 8 "class A" pulsars awaiting confirmation. \r\nInteresting science can usually only be derived from a new pulsar after confirmation and a follow-up timing campaign is carried out. One year of initial timing is the minimum timespan required to fully characterise any newly-discovered pulsars, essential for deriving pulsar parameters such as the characteristic age, magnetic field strength, spin-down rate, as well as to detect any unexpected behaviour of the pulsar which might result from emission instabilities. Pulsars on the observing list here have been confirmed in the previous and current 2021APRS semesters, the follow-up timing in OCTS2021 will produce completely new and exciting results. In addition, this timing project will allow us to measure the true Galactic plane pulsar population and the boundaries of pulsar parameter space in the galactic plane.

本申请旨在为HTRU巡天（High Time Resolution Universe Survey）低银纬银道面区块的再处理工作（项目编号P630）中发现的新脉冲星，申请计时观测所需的观测时长。我们目前已采用基于GPU的相干加速搜索（coherent acceleration search）、模板库（template bank）及快速折叠算法（fast folding algorithm）工作流，完成了该巡天90%的数据处理任务，现已发现92颗此前未知的脉冲星以及8颗待确认的“A类”脉冲星。通常而言，新发现的脉冲星仅在完成身份确认并开展后续计时观测后，方能产出具有科学价值的研究成果。对新发现脉冲星开展为期一年的初始计时观测，是完整表征其物理特性的最低时长要求，这对于推导脉冲星特征年龄、磁场强度、自转减慢率等核心参数，以及探测可能由辐射不稳定性引发的脉冲星异常行为至关重要。本次观测列表中的脉冲星已在2021年APRS观测学期的前序及当前批次中完成确认，于OCTS2021项目中开展的后续计时观测将产出全新且极具价值的科学成果。此外，本计时项目将帮助我们实测银道面区域的真实脉冲星种群分布，以及银道面内脉冲星参数空间的边界范围。